I have seen the bottom one before - I also wonder if the fittings are later - the style and type of brass work make me lean in this direction. The blade is the rarer form though.
The top one is
amazing! My panabas is laminated, but I have never seen a twist core panabas before - truly a datu class probably carried by a body guard of a high datu or sultan. Like the steel fittings on it.
The middle one looks fun too - again a datu class piece in the brass fittings. Are the white bands aluminum or silver?
You know, if you plan to toss any of these in garbage, I'll be happy to clean up the mess.